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21 |
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22 | "use strict";
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23 |
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24 | Object.defineProperty(exports, "__esModule", {
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25 | value: true
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26 | });
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27 | exports.Catalog = void 0;
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28 |
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29 | var _core_utils = require("./core_utils.js");
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30 |
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31 | var _util = require("../shared/util.js");
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32 |
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33 | var _primitives = require("./primitives.js");
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34 |
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35 | var _name_number_tree = require("./name_number_tree.js");
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36 |
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37 | var _base_stream = require("./base_stream.js");
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38 |
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39 | var _cleanup_helper = require("./cleanup_helper.js");
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40 |
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41 | var _colorspace = require("./colorspace.js");
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42 |
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43 | var _file_spec = require("./file_spec.js");
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44 |
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45 | var _image_utils = require("./image_utils.js");
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46 |
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47 | var _metadata_parser = require("./metadata_parser.js");
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48 |
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49 | var _struct_tree = require("./struct_tree.js");
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50 |
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51 | function fetchDestination(dest) {
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52 | if (dest instanceof _primitives.Dict) {
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53 | dest = dest.get("D");
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54 | }
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55 |
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56 | return Array.isArray(dest) ? dest : null;
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57 | }
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58 |
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59 | class Catalog {
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60 | constructor(pdfManager, xref) {
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61 | this.pdfManager = pdfManager;
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62 | this.xref = xref;
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63 | this._catDict = xref.getCatalogObj();
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64 |
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65 | if (!(this._catDict instanceof _primitives.Dict)) {
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66 | throw new _util.FormatError("Catalog object is not a dictionary.");
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67 | }
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68 |
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69 | this.toplevelPagesDict;
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70 | this._actualNumPages = null;
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71 | this.fontCache = new _primitives.RefSetCache();
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72 | this.builtInCMapCache = new Map();
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73 | this.standardFontDataCache = new Map();
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74 | this.globalImageCache = new _image_utils.GlobalImageCache();
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75 | this.pageKidsCountCache = new _primitives.RefSetCache();
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76 | this.pageIndexCache = new _primitives.RefSetCache();
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77 | this.nonBlendModesSet = new _primitives.RefSet();
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78 | }
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79 |
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80 | get version() {
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81 | const version = this._catDict.get("Version");
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82 |
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83 | return (0, _util.shadow)(this, "version", version instanceof _primitives.Name ? version.name : null);
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84 | }
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85 |
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86 | get lang() {
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87 | const lang = this._catDict.get("Lang");
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88 |
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89 | return (0, _util.shadow)(this, "lang", typeof lang === "string" ? (0, _util.stringToPDFString)(lang) : null);
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90 | }
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91 |
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92 | get needsRendering() {
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93 | const needsRendering = this._catDict.get("NeedsRendering");
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94 |
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95 | return (0, _util.shadow)(this, "needsRendering", typeof needsRendering === "boolean" ? needsRendering : false);
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96 | }
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97 |
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98 | get collection() {
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99 | let collection = null;
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100 |
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101 | try {
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102 | const obj = this._catDict.get("Collection");
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103 |
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104 | if (obj instanceof _primitives.Dict && obj.size > 0) {
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105 | collection = obj;
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106 | }
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107 | } catch (ex) {
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108 | if (ex instanceof _core_utils.MissingDataException) {
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109 | throw ex;
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110 | }
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111 |
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112 | (0, _util.info)("Cannot fetch Collection entry; assuming no collection is present.");
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113 | }
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114 |
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115 | return (0, _util.shadow)(this, "collection", collection);
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116 | }
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117 |
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118 | get acroForm() {
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119 | let acroForm = null;
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120 |
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121 | try {
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122 | const obj = this._catDict.get("AcroForm");
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123 |
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124 | if (obj instanceof _primitives.Dict && obj.size > 0) {
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125 | acroForm = obj;
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126 | }
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127 | } catch (ex) {
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128 | if (ex instanceof _core_utils.MissingDataException) {
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129 | throw ex;
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130 | }
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131 |
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132 | (0, _util.info)("Cannot fetch AcroForm entry; assuming no forms are present.");
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133 | }
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134 |
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135 | return (0, _util.shadow)(this, "acroForm", acroForm);
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136 | }
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137 |
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138 | get acroFormRef() {
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139 | const value = this._catDict.getRaw("AcroForm");
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140 |
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141 | return (0, _util.shadow)(this, "acroFormRef", value instanceof _primitives.Ref ? value : null);
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142 | }
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143 |
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144 | get metadata() {
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145 | const streamRef = this._catDict.getRaw("Metadata");
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146 |
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147 | if (!(streamRef instanceof _primitives.Ref)) {
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148 | return (0, _util.shadow)(this, "metadata", null);
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149 | }
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150 |
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151 | let metadata = null;
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152 |
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153 | try {
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154 | const suppressEncryption = !(this.xref.encrypt && this.xref.encrypt.encryptMetadata);
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155 | const stream = this.xref.fetch(streamRef, suppressEncryption);
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156 |
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157 | if (stream instanceof _base_stream.BaseStream && stream.dict instanceof _primitives.Dict) {
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158 | const type = stream.dict.get("Type");
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159 | const subtype = stream.dict.get("Subtype");
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160 |
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161 | if ((0, _primitives.isName)(type, "Metadata") && (0, _primitives.isName)(subtype, "XML")) {
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162 | const data = (0, _util.stringToUTF8String)(stream.getString());
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163 |
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164 | if (data) {
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165 | metadata = new _metadata_parser.MetadataParser(data).serializable;
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166 | }
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167 | }
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168 | }
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169 | } catch (ex) {
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170 | if (ex instanceof _core_utils.MissingDataException) {
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171 | throw ex;
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172 | }
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173 |
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174 | (0, _util.info)(`Skipping invalid Metadata: "${ex}".`);
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175 | }
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176 |
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177 | return (0, _util.shadow)(this, "metadata", metadata);
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178 | }
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179 |
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180 | get markInfo() {
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181 | let markInfo = null;
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182 |
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183 | try {
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184 | markInfo = this._readMarkInfo();
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185 | } catch (ex) {
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186 | if (ex instanceof _core_utils.MissingDataException) {
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187 | throw ex;
|
188 | }
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189 |
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190 | (0, _util.warn)("Unable to read mark info.");
|
191 | }
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192 |
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193 | return (0, _util.shadow)(this, "markInfo", markInfo);
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194 | }
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195 |
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196 | _readMarkInfo() {
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197 | const obj = this._catDict.get("MarkInfo");
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198 |
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199 | if (!(obj instanceof _primitives.Dict)) {
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200 | return null;
|
201 | }
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202 |
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203 | const markInfo = {
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204 | Marked: false,
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205 | UserProperties: false,
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206 | Suspects: false
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207 | };
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208 |
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209 | for (const key in markInfo) {
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210 | const value = obj.get(key);
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211 |
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212 | if (typeof value === "boolean") {
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213 | markInfo[key] = value;
|
214 | }
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215 | }
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216 |
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217 | return markInfo;
|
218 | }
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219 |
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220 | get structTreeRoot() {
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221 | let structTree = null;
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222 |
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223 | try {
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224 | structTree = this._readStructTreeRoot();
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225 | } catch (ex) {
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226 | if (ex instanceof _core_utils.MissingDataException) {
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227 | throw ex;
|
228 | }
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229 |
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230 | (0, _util.warn)("Unable read to structTreeRoot info.");
|
231 | }
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232 |
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233 | return (0, _util.shadow)(this, "structTreeRoot", structTree);
|
234 | }
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235 |
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236 | _readStructTreeRoot() {
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237 | const obj = this._catDict.get("StructTreeRoot");
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238 |
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239 | if (!(obj instanceof _primitives.Dict)) {
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240 | return null;
|
241 | }
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242 |
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243 | const root = new _struct_tree.StructTreeRoot(obj);
|
244 | root.init();
|
245 | return root;
|
246 | }
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247 |
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248 | get toplevelPagesDict() {
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249 | const pagesObj = this._catDict.get("Pages");
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250 |
|
251 | if (!(pagesObj instanceof _primitives.Dict)) {
|
252 | throw new _util.FormatError("Invalid top-level pages dictionary.");
|
253 | }
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254 |
|
255 | return (0, _util.shadow)(this, "toplevelPagesDict", pagesObj);
|
256 | }
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257 |
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258 | get documentOutline() {
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259 | let obj = null;
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260 |
|
261 | try {
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262 | obj = this._readDocumentOutline();
|
263 | } catch (ex) {
|
264 | if (ex instanceof _core_utils.MissingDataException) {
|
265 | throw ex;
|
266 | }
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267 |
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268 | (0, _util.warn)("Unable to read document outline.");
|
269 | }
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270 |
|
271 | return (0, _util.shadow)(this, "documentOutline", obj);
|
272 | }
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273 |
|
274 | _readDocumentOutline() {
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275 | let obj = this._catDict.get("Outlines");
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276 |
|
277 | if (!(obj instanceof _primitives.Dict)) {
|
278 | return null;
|
279 | }
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280 |
|
281 | obj = obj.getRaw("First");
|
282 |
|
283 | if (!(obj instanceof _primitives.Ref)) {
|
284 | return null;
|
285 | }
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286 |
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287 | const root = {
|
288 | items: []
|
289 | };
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290 | const queue = [{
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291 | obj,
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292 | parent: root
|
293 | }];
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294 | const processed = new _primitives.RefSet();
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295 | processed.put(obj);
|
296 | const xref = this.xref,
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297 | blackColor = new Uint8ClampedArray(3);
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298 |
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299 | while (queue.length > 0) {
|
300 | const i = queue.shift();
|
301 | const outlineDict = xref.fetchIfRef(i.obj);
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302 |
|
303 | if (outlineDict === null) {
|
304 | continue;
|
305 | }
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306 |
|
307 | if (!outlineDict.has("Title")) {
|
308 | throw new _util.FormatError("Invalid outline item encountered.");
|
309 | }
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310 |
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311 | const data = {
|
312 | url: null,
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313 | dest: null
|
314 | };
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315 | Catalog.parseDestDictionary({
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316 | destDict: outlineDict,
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317 | resultObj: data,
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318 | docBaseUrl: this.pdfManager.docBaseUrl
|
319 | });
|
320 | const title = outlineDict.get("Title");
|
321 | const flags = outlineDict.get("F") || 0;
|
322 | const color = outlineDict.getArray("C");
|
323 | const count = outlineDict.get("Count");
|
324 | let rgbColor = blackColor;
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325 |
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326 | if (Array.isArray(color) && color.length === 3 && (color[0] !== 0 || color[1] !== 0 || color[2] !== 0)) {
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327 | rgbColor = _colorspace.ColorSpace.singletons.rgb.getRgb(color, 0);
|
328 | }
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329 |
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330 | const outlineItem = {
|
331 | dest: data.dest,
|
332 | url: data.url,
|
333 | unsafeUrl: data.unsafeUrl,
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334 | newWindow: data.newWindow,
|
335 | title: (0, _util.stringToPDFString)(title),
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336 | color: rgbColor,
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337 | count: Number.isInteger(count) ? count : undefined,
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338 | bold: !!(flags & 2),
|
339 | italic: !!(flags & 1),
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340 | items: []
|
341 | };
|
342 | i.parent.items.push(outlineItem);
|
343 | obj = outlineDict.getRaw("First");
|
344 |
|
345 | if (obj instanceof _primitives.Ref && !processed.has(obj)) {
|
346 | queue.push({
|
347 | obj,
|
348 | parent: outlineItem
|
349 | });
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350 | processed.put(obj);
|
351 | }
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352 |
|
353 | obj = outlineDict.getRaw("Next");
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354 |
|
355 | if (obj instanceof _primitives.Ref && !processed.has(obj)) {
|
356 | queue.push({
|
357 | obj,
|
358 | parent: i.parent
|
359 | });
|
360 | processed.put(obj);
|
361 | }
|
362 | }
|
363 |
|
364 | return root.items.length > 0 ? root.items : null;
|
365 | }
|
366 |
|
367 | get permissions() {
|
368 | let permissions = null;
|
369 |
|
370 | try {
|
371 | permissions = this._readPermissions();
|
372 | } catch (ex) {
|
373 | if (ex instanceof _core_utils.MissingDataException) {
|
374 | throw ex;
|
375 | }
|
376 |
|
377 | (0, _util.warn)("Unable to read permissions.");
|
378 | }
|
379 |
|
380 | return (0, _util.shadow)(this, "permissions", permissions);
|
381 | }
|
382 |
|
383 | _readPermissions() {
|
384 | const encrypt = this.xref.trailer.get("Encrypt");
|
385 |
|
386 | if (!(encrypt instanceof _primitives.Dict)) {
|
387 | return null;
|
388 | }
|
389 |
|
390 | let flags = encrypt.get("P");
|
391 |
|
392 | if (typeof flags !== "number") {
|
393 | return null;
|
394 | }
|
395 |
|
396 | flags += 2 ** 32;
|
397 | const permissions = [];
|
398 |
|
399 | for (const key in _util.PermissionFlag) {
|
400 | const value = _util.PermissionFlag[key];
|
401 |
|
402 | if (flags & value) {
|
403 | permissions.push(value);
|
404 | }
|
405 | }
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406 |
|
407 | return permissions;
|
408 | }
|
409 |
|
410 | get optionalContentConfig() {
|
411 | let config = null;
|
412 |
|
413 | try {
|
414 | const properties = this._catDict.get("OCProperties");
|
415 |
|
416 | if (!properties) {
|
417 | return (0, _util.shadow)(this, "optionalContentConfig", null);
|
418 | }
|
419 |
|
420 | const defaultConfig = properties.get("D");
|
421 |
|
422 | if (!defaultConfig) {
|
423 | return (0, _util.shadow)(this, "optionalContentConfig", null);
|
424 | }
|
425 |
|
426 | const groupsData = properties.get("OCGs");
|
427 |
|
428 | if (!Array.isArray(groupsData)) {
|
429 | return (0, _util.shadow)(this, "optionalContentConfig", null);
|
430 | }
|
431 |
|
432 | const groups = [];
|
433 | const groupRefs = [];
|
434 |
|
435 | for (const groupRef of groupsData) {
|
436 | if (!(groupRef instanceof _primitives.Ref)) {
|
437 | continue;
|
438 | }
|
439 |
|
440 | groupRefs.push(groupRef);
|
441 | const group = this.xref.fetchIfRef(groupRef);
|
442 | groups.push({
|
443 | id: groupRef.toString(),
|
444 | name: typeof group.get("Name") === "string" ? (0, _util.stringToPDFString)(group.get("Name")) : null,
|
445 | intent: typeof group.get("Intent") === "string" ? (0, _util.stringToPDFString)(group.get("Intent")) : null
|
446 | });
|
447 | }
|
448 |
|
449 | config = this._readOptionalContentConfig(defaultConfig, groupRefs);
|
450 | config.groups = groups;
|
451 | } catch (ex) {
|
452 | if (ex instanceof _core_utils.MissingDataException) {
|
453 | throw ex;
|
454 | }
|
455 |
|
456 | (0, _util.warn)(`Unable to read optional content config: ${ex}`);
|
457 | }
|
458 |
|
459 | return (0, _util.shadow)(this, "optionalContentConfig", config);
|
460 | }
|
461 |
|
462 | _readOptionalContentConfig(config, contentGroupRefs) {
|
463 | function parseOnOff(refs) {
|
464 | const onParsed = [];
|
465 |
|
466 | if (Array.isArray(refs)) {
|
467 | for (const value of refs) {
|
468 | if (!(value instanceof _primitives.Ref)) {
|
469 | continue;
|
470 | }
|
471 |
|
472 | if (contentGroupRefs.includes(value)) {
|
473 | onParsed.push(value.toString());
|
474 | }
|
475 | }
|
476 | }
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477 |
|
478 | return onParsed;
|
479 | }
|
480 |
|
481 | function parseOrder(refs, nestedLevels = 0) {
|
482 | if (!Array.isArray(refs)) {
|
483 | return null;
|
484 | }
|
485 |
|
486 | const order = [];
|
487 |
|
488 | for (const value of refs) {
|
489 | if (value instanceof _primitives.Ref && contentGroupRefs.includes(value)) {
|
490 | parsedOrderRefs.put(value);
|
491 | order.push(value.toString());
|
492 | continue;
|
493 | }
|
494 |
|
495 | const nestedOrder = parseNestedOrder(value, nestedLevels);
|
496 |
|
497 | if (nestedOrder) {
|
498 | order.push(nestedOrder);
|
499 | }
|
500 | }
|
501 |
|
502 | if (nestedLevels > 0) {
|
503 | return order;
|
504 | }
|
505 |
|
506 | const hiddenGroups = [];
|
507 |
|
508 | for (const groupRef of contentGroupRefs) {
|
509 | if (parsedOrderRefs.has(groupRef)) {
|
510 | continue;
|
511 | }
|
512 |
|
513 | hiddenGroups.push(groupRef.toString());
|
514 | }
|
515 |
|
516 | if (hiddenGroups.length) {
|
517 | order.push({
|
518 | name: null,
|
519 | order: hiddenGroups
|
520 | });
|
521 | }
|
522 |
|
523 | return order;
|
524 | }
|
525 |
|
526 | function parseNestedOrder(ref, nestedLevels) {
|
527 | if (++nestedLevels > MAX_NESTED_LEVELS) {
|
528 | (0, _util.warn)("parseNestedOrder - reached MAX_NESTED_LEVELS.");
|
529 | return null;
|
530 | }
|
531 |
|
532 | const value = xref.fetchIfRef(ref);
|
533 |
|
534 | if (!Array.isArray(value)) {
|
535 | return null;
|
536 | }
|
537 |
|
538 | const nestedName = xref.fetchIfRef(value[0]);
|
539 |
|
540 | if (typeof nestedName !== "string") {
|
541 | return null;
|
542 | }
|
543 |
|
544 | const nestedOrder = parseOrder(value.slice(1), nestedLevels);
|
545 |
|
546 | if (!nestedOrder || !nestedOrder.length) {
|
547 | return null;
|
548 | }
|
549 |
|
550 | return {
|
551 | name: (0, _util.stringToPDFString)(nestedName),
|
552 | order: nestedOrder
|
553 | };
|
554 | }
|
555 |
|
556 | const xref = this.xref,
|
557 | parsedOrderRefs = new _primitives.RefSet(),
|
558 | MAX_NESTED_LEVELS = 10;
|
559 | return {
|
560 | name: typeof config.get("Name") === "string" ? (0, _util.stringToPDFString)(config.get("Name")) : null,
|
561 | creator: typeof config.get("Creator") === "string" ? (0, _util.stringToPDFString)(config.get("Creator")) : null,
|
562 | baseState: config.get("BaseState") instanceof _primitives.Name ? config.get("BaseState").name : null,
|
563 | on: parseOnOff(config.get("ON")),
|
564 | off: parseOnOff(config.get("OFF")),
|
565 | order: parseOrder(config.get("Order")),
|
566 | groups: null
|
567 | };
|
568 | }
|
569 |
|
570 | setActualNumPages(num = null) {
|
571 | this._actualNumPages = num;
|
572 | }
|
573 |
|
574 | get hasActualNumPages() {
|
575 | return this._actualNumPages !== null;
|
576 | }
|
577 |
|
578 | get _pagesCount() {
|
579 | const obj = this.toplevelPagesDict.get("Count");
|
580 |
|
581 | if (!Number.isInteger(obj)) {
|
582 | throw new _util.FormatError("Page count in top-level pages dictionary is not an integer.");
|
583 | }
|
584 |
|
585 | return (0, _util.shadow)(this, "_pagesCount", obj);
|
586 | }
|
587 |
|
588 | get numPages() {
|
589 | return this.hasActualNumPages ? this._actualNumPages : this._pagesCount;
|
590 | }
|
591 |
|
592 | get destinations() {
|
593 | const obj = this._readDests(),
|
594 | dests = Object.create(null);
|
595 |
|
596 | if (obj instanceof _name_number_tree.NameTree) {
|
597 | for (const [key, value] of obj.getAll()) {
|
598 | const dest = fetchDestination(value);
|
599 |
|
600 | if (dest) {
|
601 | dests[(0, _util.stringToPDFString)(key)] = dest;
|
602 | }
|
603 | }
|
604 | } else if (obj instanceof _primitives.Dict) {
|
605 | obj.forEach(function (key, value) {
|
606 | const dest = fetchDestination(value);
|
607 |
|
608 | if (dest) {
|
609 | dests[key] = dest;
|
610 | }
|
611 | });
|
612 | }
|
613 |
|
614 | return (0, _util.shadow)(this, "destinations", dests);
|
615 | }
|
616 |
|
617 | getDestination(id) {
|
618 | const obj = this._readDests();
|
619 |
|
620 | if (obj instanceof _name_number_tree.NameTree) {
|
621 | const dest = fetchDestination(obj.get(id));
|
622 |
|
623 | if (dest) {
|
624 | return dest;
|
625 | }
|
626 |
|
627 | const allDest = this.destinations[id];
|
628 |
|
629 | if (allDest) {
|
630 | (0, _util.warn)(`Found "${id}" at an incorrect position in the NameTree.`);
|
631 | return allDest;
|
632 | }
|
633 | } else if (obj instanceof _primitives.Dict) {
|
634 | const dest = fetchDestination(obj.get(id));
|
635 |
|
636 | if (dest) {
|
637 | return dest;
|
638 | }
|
639 | }
|
640 |
|
641 | return null;
|
642 | }
|
643 |
|
644 | _readDests() {
|
645 | const obj = this._catDict.get("Names");
|
646 |
|
647 | if (obj && obj.has("Dests")) {
|
648 | return new _name_number_tree.NameTree(obj.getRaw("Dests"), this.xref);
|
649 | } else if (this._catDict.has("Dests")) {
|
650 | return this._catDict.get("Dests");
|
651 | }
|
652 |
|
653 | return undefined;
|
654 | }
|
655 |
|
656 | get pageLabels() {
|
657 | let obj = null;
|
658 |
|
659 | try {
|
660 | obj = this._readPageLabels();
|
661 | } catch (ex) {
|
662 | if (ex instanceof _core_utils.MissingDataException) {
|
663 | throw ex;
|
664 | }
|
665 |
|
666 | (0, _util.warn)("Unable to read page labels.");
|
667 | }
|
668 |
|
669 | return (0, _util.shadow)(this, "pageLabels", obj);
|
670 | }
|
671 |
|
672 | _readPageLabels() {
|
673 | const obj = this._catDict.getRaw("PageLabels");
|
674 |
|
675 | if (!obj) {
|
676 | return null;
|
677 | }
|
678 |
|
679 | const pageLabels = new Array(this.numPages);
|
680 | let style = null,
|
681 | prefix = "";
|
682 | const numberTree = new _name_number_tree.NumberTree(obj, this.xref);
|
683 | const nums = numberTree.getAll();
|
684 | let currentLabel = "",
|
685 | currentIndex = 1;
|
686 |
|
687 | for (let i = 0, ii = this.numPages; i < ii; i++) {
|
688 | const labelDict = nums.get(i);
|
689 |
|
690 | if (labelDict !== undefined) {
|
691 | if (!(labelDict instanceof _primitives.Dict)) {
|
692 | throw new _util.FormatError("PageLabel is not a dictionary.");
|
693 | }
|
694 |
|
695 | if (labelDict.has("Type") && !(0, _primitives.isName)(labelDict.get("Type"), "PageLabel")) {
|
696 | throw new _util.FormatError("Invalid type in PageLabel dictionary.");
|
697 | }
|
698 |
|
699 | if (labelDict.has("S")) {
|
700 | const s = labelDict.get("S");
|
701 |
|
702 | if (!(s instanceof _primitives.Name)) {
|
703 | throw new _util.FormatError("Invalid style in PageLabel dictionary.");
|
704 | }
|
705 |
|
706 | style = s.name;
|
707 | } else {
|
708 | style = null;
|
709 | }
|
710 |
|
711 | if (labelDict.has("P")) {
|
712 | const p = labelDict.get("P");
|
713 |
|
714 | if (typeof p !== "string") {
|
715 | throw new _util.FormatError("Invalid prefix in PageLabel dictionary.");
|
716 | }
|
717 |
|
718 | prefix = (0, _util.stringToPDFString)(p);
|
719 | } else {
|
720 | prefix = "";
|
721 | }
|
722 |
|
723 | if (labelDict.has("St")) {
|
724 | const st = labelDict.get("St");
|
725 |
|
726 | if (!(Number.isInteger(st) && st >= 1)) {
|
727 | throw new _util.FormatError("Invalid start in PageLabel dictionary.");
|
728 | }
|
729 |
|
730 | currentIndex = st;
|
731 | } else {
|
732 | currentIndex = 1;
|
733 | }
|
734 | }
|
735 |
|
736 | switch (style) {
|
737 | case "D":
|
738 | currentLabel = currentIndex;
|
739 | break;
|
740 |
|
741 | case "R":
|
742 | case "r":
|
743 | currentLabel = (0, _core_utils.toRomanNumerals)(currentIndex, style === "r");
|
744 | break;
|
745 |
|
746 | case "A":
|
747 | case "a":
|
748 | const LIMIT = 26;
|
749 | const A_UPPER_CASE = 0x41,
|
750 | A_LOWER_CASE = 0x61;
|
751 | const baseCharCode = style === "a" ? A_LOWER_CASE : A_UPPER_CASE;
|
752 | const letterIndex = currentIndex - 1;
|
753 | const character = String.fromCharCode(baseCharCode + letterIndex % LIMIT);
|
754 | currentLabel = character.repeat(Math.floor(letterIndex / LIMIT) + 1);
|
755 | break;
|
756 |
|
757 | default:
|
758 | if (style) {
|
759 | throw new _util.FormatError(`Invalid style "${style}" in PageLabel dictionary.`);
|
760 | }
|
761 |
|
762 | currentLabel = "";
|
763 | }
|
764 |
|
765 | pageLabels[i] = prefix + currentLabel;
|
766 | currentIndex++;
|
767 | }
|
768 |
|
769 | return pageLabels;
|
770 | }
|
771 |
|
772 | get pageLayout() {
|
773 | const obj = this._catDict.get("PageLayout");
|
774 |
|
775 | let pageLayout = "";
|
776 |
|
777 | if (obj instanceof _primitives.Name) {
|
778 | switch (obj.name) {
|
779 | case "SinglePage":
|
780 | case "OneColumn":
|
781 | case "TwoColumnLeft":
|
782 | case "TwoColumnRight":
|
783 | case "TwoPageLeft":
|
784 | case "TwoPageRight":
|
785 | pageLayout = obj.name;
|
786 | }
|
787 | }
|
788 |
|
789 | return (0, _util.shadow)(this, "pageLayout", pageLayout);
|
790 | }
|
791 |
|
792 | get pageMode() {
|
793 | const obj = this._catDict.get("PageMode");
|
794 |
|
795 | let pageMode = "UseNone";
|
796 |
|
797 | if (obj instanceof _primitives.Name) {
|
798 | switch (obj.name) {
|
799 | case "UseNone":
|
800 | case "UseOutlines":
|
801 | case "UseThumbs":
|
802 | case "FullScreen":
|
803 | case "UseOC":
|
804 | case "UseAttachments":
|
805 | pageMode = obj.name;
|
806 | }
|
807 | }
|
808 |
|
809 | return (0, _util.shadow)(this, "pageMode", pageMode);
|
810 | }
|
811 |
|
812 | get viewerPreferences() {
|
813 | const obj = this._catDict.get("ViewerPreferences");
|
814 |
|
815 | if (!(obj instanceof _primitives.Dict)) {
|
816 | return (0, _util.shadow)(this, "viewerPreferences", null);
|
817 | }
|
818 |
|
819 | let prefs = null;
|
820 |
|
821 | for (const key of obj.getKeys()) {
|
822 | const value = obj.get(key);
|
823 | let prefValue;
|
824 |
|
825 | switch (key) {
|
826 | case "HideToolbar":
|
827 | case "HideMenubar":
|
828 | case "HideWindowUI":
|
829 | case "FitWindow":
|
830 | case "CenterWindow":
|
831 | case "DisplayDocTitle":
|
832 | case "PickTrayByPDFSize":
|
833 | if (typeof value === "boolean") {
|
834 | prefValue = value;
|
835 | }
|
836 |
|
837 | break;
|
838 |
|
839 | case "NonFullScreenPageMode":
|
840 | if (value instanceof _primitives.Name) {
|
841 | switch (value.name) {
|
842 | case "UseNone":
|
843 | case "UseOutlines":
|
844 | case "UseThumbs":
|
845 | case "UseOC":
|
846 | prefValue = value.name;
|
847 | break;
|
848 |
|
849 | default:
|
850 | prefValue = "UseNone";
|
851 | }
|
852 | }
|
853 |
|
854 | break;
|
855 |
|
856 | case "Direction":
|
857 | if (value instanceof _primitives.Name) {
|
858 | switch (value.name) {
|
859 | case "L2R":
|
860 | case "R2L":
|
861 | prefValue = value.name;
|
862 | break;
|
863 |
|
864 | default:
|
865 | prefValue = "L2R";
|
866 | }
|
867 | }
|
868 |
|
869 | break;
|
870 |
|
871 | case "ViewArea":
|
872 | case "ViewClip":
|
873 | case "PrintArea":
|
874 | case "PrintClip":
|
875 | if (value instanceof _primitives.Name) {
|
876 | switch (value.name) {
|
877 | case "MediaBox":
|
878 | case "CropBox":
|
879 | case "BleedBox":
|
880 | case "TrimBox":
|
881 | case "ArtBox":
|
882 | prefValue = value.name;
|
883 | break;
|
884 |
|
885 | default:
|
886 | prefValue = "CropBox";
|
887 | }
|
888 | }
|
889 |
|
890 | break;
|
891 |
|
892 | case "PrintScaling":
|
893 | if (value instanceof _primitives.Name) {
|
894 | switch (value.name) {
|
895 | case "None":
|
896 | case "AppDefault":
|
897 | prefValue = value.name;
|
898 | break;
|
899 |
|
900 | default:
|
901 | prefValue = "AppDefault";
|
902 | }
|
903 | }
|
904 |
|
905 | break;
|
906 |
|
907 | case "Duplex":
|
908 | if (value instanceof _primitives.Name) {
|
909 | switch (value.name) {
|
910 | case "Simplex":
|
911 | case "DuplexFlipShortEdge":
|
912 | case "DuplexFlipLongEdge":
|
913 | prefValue = value.name;
|
914 | break;
|
915 |
|
916 | default:
|
917 | prefValue = "None";
|
918 | }
|
919 | }
|
920 |
|
921 | break;
|
922 |
|
923 | case "PrintPageRange":
|
924 | if (Array.isArray(value) && value.length % 2 === 0) {
|
925 | const isValid = value.every((page, i, arr) => {
|
926 | return Number.isInteger(page) && page > 0 && (i === 0 || page >= arr[i - 1]) && page <= this.numPages;
|
927 | });
|
928 |
|
929 | if (isValid) {
|
930 | prefValue = value;
|
931 | }
|
932 | }
|
933 |
|
934 | break;
|
935 |
|
936 | case "NumCopies":
|
937 | if (Number.isInteger(value) && value > 0) {
|
938 | prefValue = value;
|
939 | }
|
940 |
|
941 | break;
|
942 |
|
943 | default:
|
944 | (0, _util.warn)(`Ignoring non-standard key in ViewerPreferences: ${key}.`);
|
945 | continue;
|
946 | }
|
947 |
|
948 | if (prefValue === undefined) {
|
949 | (0, _util.warn)(`Bad value, for key "${key}", in ViewerPreferences: ${value}.`);
|
950 | continue;
|
951 | }
|
952 |
|
953 | if (!prefs) {
|
954 | prefs = Object.create(null);
|
955 | }
|
956 |
|
957 | prefs[key] = prefValue;
|
958 | }
|
959 |
|
960 | return (0, _util.shadow)(this, "viewerPreferences", prefs);
|
961 | }
|
962 |
|
963 | get openAction() {
|
964 | const obj = this._catDict.get("OpenAction");
|
965 |
|
966 | const openAction = Object.create(null);
|
967 |
|
968 | if (obj instanceof _primitives.Dict) {
|
969 | const destDict = new _primitives.Dict(this.xref);
|
970 | destDict.set("A", obj);
|
971 | const resultObj = {
|
972 | url: null,
|
973 | dest: null,
|
974 | action: null
|
975 | };
|
976 | Catalog.parseDestDictionary({
|
977 | destDict,
|
978 | resultObj
|
979 | });
|
980 |
|
981 | if (Array.isArray(resultObj.dest)) {
|
982 | openAction.dest = resultObj.dest;
|
983 | } else if (resultObj.action) {
|
984 | openAction.action = resultObj.action;
|
985 | }
|
986 | } else if (Array.isArray(obj)) {
|
987 | openAction.dest = obj;
|
988 | }
|
989 |
|
990 | return (0, _util.shadow)(this, "openAction", (0, _util.objectSize)(openAction) > 0 ? openAction : null);
|
991 | }
|
992 |
|
993 | get attachments() {
|
994 | const obj = this._catDict.get("Names");
|
995 |
|
996 | let attachments = null;
|
997 |
|
998 | if (obj instanceof _primitives.Dict && obj.has("EmbeddedFiles")) {
|
999 | const nameTree = new _name_number_tree.NameTree(obj.getRaw("EmbeddedFiles"), this.xref);
|
1000 |
|
1001 | for (const [key, value] of nameTree.getAll()) {
|
1002 | const fs = new _file_spec.FileSpec(value, this.xref);
|
1003 |
|
1004 | if (!attachments) {
|
1005 | attachments = Object.create(null);
|
1006 | }
|
1007 |
|
1008 | attachments[(0, _util.stringToPDFString)(key)] = fs.serializable;
|
1009 | }
|
1010 | }
|
1011 |
|
1012 | return (0, _util.shadow)(this, "attachments", attachments);
|
1013 | }
|
1014 |
|
1015 | get xfaImages() {
|
1016 | const obj = this._catDict.get("Names");
|
1017 |
|
1018 | let xfaImages = null;
|
1019 |
|
1020 | if (obj instanceof _primitives.Dict && obj.has("XFAImages")) {
|
1021 | const nameTree = new _name_number_tree.NameTree(obj.getRaw("XFAImages"), this.xref);
|
1022 |
|
1023 | for (const [key, value] of nameTree.getAll()) {
|
1024 | if (!xfaImages) {
|
1025 | xfaImages = new _primitives.Dict(this.xref);
|
1026 | }
|
1027 |
|
1028 | xfaImages.set((0, _util.stringToPDFString)(key), value);
|
1029 | }
|
1030 | }
|
1031 |
|
1032 | return (0, _util.shadow)(this, "xfaImages", xfaImages);
|
1033 | }
|
1034 |
|
1035 | _collectJavaScript() {
|
1036 | const obj = this._catDict.get("Names");
|
1037 |
|
1038 | let javaScript = null;
|
1039 |
|
1040 | function appendIfJavaScriptDict(name, jsDict) {
|
1041 | if (!(jsDict instanceof _primitives.Dict)) {
|
1042 | return;
|
1043 | }
|
1044 |
|
1045 | if (!(0, _primitives.isName)(jsDict.get("S"), "JavaScript")) {
|
1046 | return;
|
1047 | }
|
1048 |
|
1049 | let js = jsDict.get("JS");
|
1050 |
|
1051 | if (js instanceof _base_stream.BaseStream) {
|
1052 | js = js.getString();
|
1053 | } else if (typeof js !== "string") {
|
1054 | return;
|
1055 | }
|
1056 |
|
1057 | if (javaScript === null) {
|
1058 | javaScript = new Map();
|
1059 | }
|
1060 |
|
1061 | js = (0, _util.stringToPDFString)(js).replace(/\u0000/g, "");
|
1062 | javaScript.set(name, js);
|
1063 | }
|
1064 |
|
1065 | if (obj instanceof _primitives.Dict && obj.has("JavaScript")) {
|
1066 | const nameTree = new _name_number_tree.NameTree(obj.getRaw("JavaScript"), this.xref);
|
1067 |
|
1068 | for (const [key, value] of nameTree.getAll()) {
|
1069 | appendIfJavaScriptDict((0, _util.stringToPDFString)(key), value);
|
1070 | }
|
1071 | }
|
1072 |
|
1073 | const openAction = this._catDict.get("OpenAction");
|
1074 |
|
1075 | if (openAction) {
|
1076 | appendIfJavaScriptDict("OpenAction", openAction);
|
1077 | }
|
1078 |
|
1079 | return javaScript;
|
1080 | }
|
1081 |
|
1082 | get javaScript() {
|
1083 | const javaScript = this._collectJavaScript();
|
1084 |
|
1085 | return (0, _util.shadow)(this, "javaScript", javaScript ? [...javaScript.values()] : null);
|
1086 | }
|
1087 |
|
1088 | get jsActions() {
|
1089 | const javaScript = this._collectJavaScript();
|
1090 |
|
1091 | let actions = (0, _core_utils.collectActions)(this.xref, this._catDict, _util.DocumentActionEventType);
|
1092 |
|
1093 | if (javaScript) {
|
1094 | if (!actions) {
|
1095 | actions = Object.create(null);
|
1096 | }
|
1097 |
|
1098 | for (const [key, val] of javaScript) {
|
1099 | if (key in actions) {
|
1100 | actions[key].push(val);
|
1101 | } else {
|
1102 | actions[key] = [val];
|
1103 | }
|
1104 | }
|
1105 | }
|
1106 |
|
1107 | return (0, _util.shadow)(this, "jsActions", actions);
|
1108 | }
|
1109 |
|
1110 | async fontFallback(id, handler) {
|
1111 | const translatedFonts = await Promise.all(this.fontCache);
|
1112 |
|
1113 | for (const translatedFont of translatedFonts) {
|
1114 | if (translatedFont.loadedName === id) {
|
1115 | translatedFont.fallback(handler);
|
1116 | return;
|
1117 | }
|
1118 | }
|
1119 | }
|
1120 |
|
1121 | async cleanup(manuallyTriggered = false) {
|
1122 | (0, _cleanup_helper.clearGlobalCaches)();
|
1123 | this.globalImageCache.clear(manuallyTriggered);
|
1124 | this.pageKidsCountCache.clear();
|
1125 | this.pageIndexCache.clear();
|
1126 | this.nonBlendModesSet.clear();
|
1127 | const translatedFonts = await Promise.all(this.fontCache);
|
1128 |
|
1129 | for (const {
|
1130 | dict
|
1131 | } of translatedFonts) {
|
1132 | delete dict.cacheKey;
|
1133 | }
|
1134 |
|
1135 | this.fontCache.clear();
|
1136 | this.builtInCMapCache.clear();
|
1137 | this.standardFontDataCache.clear();
|
1138 | }
|
1139 |
|
1140 | async getPageDict(pageIndex) {
|
1141 | const nodesToVisit = [this.toplevelPagesDict];
|
1142 | const visitedNodes = new _primitives.RefSet();
|
1143 |
|
1144 | const pagesRef = this._catDict.getRaw("Pages");
|
1145 |
|
1146 | if (pagesRef instanceof _primitives.Ref) {
|
1147 | visitedNodes.put(pagesRef);
|
1148 | }
|
1149 |
|
1150 | const xref = this.xref,
|
1151 | pageKidsCountCache = this.pageKidsCountCache,
|
1152 | pageIndexCache = this.pageIndexCache;
|
1153 | let currentPageIndex = 0;
|
1154 |
|
1155 | while (nodesToVisit.length) {
|
1156 | const currentNode = nodesToVisit.pop();
|
1157 |
|
1158 | if (currentNode instanceof _primitives.Ref) {
|
1159 | const count = pageKidsCountCache.get(currentNode);
|
1160 |
|
1161 | if (count >= 0 && currentPageIndex + count <= pageIndex) {
|
1162 | currentPageIndex += count;
|
1163 | continue;
|
1164 | }
|
1165 |
|
1166 | if (visitedNodes.has(currentNode)) {
|
1167 | throw new _util.FormatError("Pages tree contains circular reference.");
|
1168 | }
|
1169 |
|
1170 | visitedNodes.put(currentNode);
|
1171 | const obj = await xref.fetchAsync(currentNode);
|
1172 |
|
1173 | if (obj instanceof _primitives.Dict) {
|
1174 | let type = obj.getRaw("Type");
|
1175 |
|
1176 | if (type instanceof _primitives.Ref) {
|
1177 | type = await xref.fetchAsync(type);
|
1178 | }
|
1179 |
|
1180 | if ((0, _primitives.isName)(type, "Page") || !obj.has("Kids")) {
|
1181 | if (!pageKidsCountCache.has(currentNode)) {
|
1182 | pageKidsCountCache.put(currentNode, 1);
|
1183 | }
|
1184 |
|
1185 | if (!pageIndexCache.has(currentNode)) {
|
1186 | pageIndexCache.put(currentNode, currentPageIndex);
|
1187 | }
|
1188 |
|
1189 | if (currentPageIndex === pageIndex) {
|
1190 | return [obj, currentNode];
|
1191 | }
|
1192 |
|
1193 | currentPageIndex++;
|
1194 | continue;
|
1195 | }
|
1196 | }
|
1197 |
|
1198 | nodesToVisit.push(obj);
|
1199 | continue;
|
1200 | }
|
1201 |
|
1202 | if (!(currentNode instanceof _primitives.Dict)) {
|
1203 | throw new _util.FormatError("Page dictionary kid reference points to wrong type of object.");
|
1204 | }
|
1205 |
|
1206 | const {
|
1207 | objId
|
1208 | } = currentNode;
|
1209 | let count = currentNode.getRaw("Count");
|
1210 |
|
1211 | if (count instanceof _primitives.Ref) {
|
1212 | count = await xref.fetchAsync(count);
|
1213 | }
|
1214 |
|
1215 | if (Number.isInteger(count) && count >= 0) {
|
1216 | if (objId && !pageKidsCountCache.has(objId)) {
|
1217 | pageKidsCountCache.put(objId, count);
|
1218 | }
|
1219 |
|
1220 | if (currentPageIndex + count <= pageIndex) {
|
1221 | currentPageIndex += count;
|
1222 | continue;
|
1223 | }
|
1224 | }
|
1225 |
|
1226 | let kids = currentNode.getRaw("Kids");
|
1227 |
|
1228 | if (kids instanceof _primitives.Ref) {
|
1229 | kids = await xref.fetchAsync(kids);
|
1230 | }
|
1231 |
|
1232 | if (!Array.isArray(kids)) {
|
1233 | let type = currentNode.getRaw("Type");
|
1234 |
|
1235 | if (type instanceof _primitives.Ref) {
|
1236 | type = await xref.fetchAsync(type);
|
1237 | }
|
1238 |
|
1239 | if ((0, _primitives.isName)(type, "Page") || !currentNode.has("Kids")) {
|
1240 | if (currentPageIndex === pageIndex) {
|
1241 | return [currentNode, null];
|
1242 | }
|
1243 |
|
1244 | currentPageIndex++;
|
1245 | continue;
|
1246 | }
|
1247 |
|
1248 | throw new _util.FormatError("Page dictionary kids object is not an array.");
|
1249 | }
|
1250 |
|
1251 | for (let last = kids.length - 1; last >= 0; last--) {
|
1252 | nodesToVisit.push(kids[last]);
|
1253 | }
|
1254 | }
|
1255 |
|
1256 | throw new Error(`Page index ${pageIndex} not found.`);
|
1257 | }
|
1258 |
|
1259 | async getAllPageDicts(recoveryMode = false) {
|
1260 | const queue = [{
|
1261 | currentNode: this.toplevelPagesDict,
|
1262 | posInKids: 0
|
1263 | }];
|
1264 | const visitedNodes = new _primitives.RefSet();
|
1265 |
|
1266 | const pagesRef = this._catDict.getRaw("Pages");
|
1267 |
|
1268 | if (pagesRef instanceof _primitives.Ref) {
|
1269 | visitedNodes.put(pagesRef);
|
1270 | }
|
1271 |
|
1272 | const map = new Map(),
|
1273 | xref = this.xref,
|
1274 | pageIndexCache = this.pageIndexCache;
|
1275 | let pageIndex = 0;
|
1276 |
|
1277 | function addPageDict(pageDict, pageRef) {
|
1278 | if (pageRef && !pageIndexCache.has(pageRef)) {
|
1279 | pageIndexCache.put(pageRef, pageIndex);
|
1280 | }
|
1281 |
|
1282 | map.set(pageIndex++, [pageDict, pageRef]);
|
1283 | }
|
1284 |
|
1285 | function addPageError(error) {
|
1286 | if (error instanceof _core_utils.XRefEntryException && !recoveryMode) {
|
1287 | throw error;
|
1288 | }
|
1289 |
|
1290 | map.set(pageIndex++, [error, null]);
|
1291 | }
|
1292 |
|
1293 | while (queue.length > 0) {
|
1294 | const queueItem = queue.at(-1);
|
1295 | const {
|
1296 | currentNode,
|
1297 | posInKids
|
1298 | } = queueItem;
|
1299 | let kids = currentNode.getRaw("Kids");
|
1300 |
|
1301 | if (kids instanceof _primitives.Ref) {
|
1302 | try {
|
1303 | kids = await xref.fetchAsync(kids);
|
1304 | } catch (ex) {
|
1305 | addPageError(ex);
|
1306 | break;
|
1307 | }
|
1308 | }
|
1309 |
|
1310 | if (!Array.isArray(kids)) {
|
1311 | addPageError(new _util.FormatError("Page dictionary kids object is not an array."));
|
1312 | break;
|
1313 | }
|
1314 |
|
1315 | if (posInKids >= kids.length) {
|
1316 | queue.pop();
|
1317 | continue;
|
1318 | }
|
1319 |
|
1320 | const kidObj = kids[posInKids];
|
1321 | let obj;
|
1322 |
|
1323 | if (kidObj instanceof _primitives.Ref) {
|
1324 | if (visitedNodes.has(kidObj)) {
|
1325 | addPageError(new _util.FormatError("Pages tree contains circular reference."));
|
1326 | break;
|
1327 | }
|
1328 |
|
1329 | visitedNodes.put(kidObj);
|
1330 |
|
1331 | try {
|
1332 | obj = await xref.fetchAsync(kidObj);
|
1333 | } catch (ex) {
|
1334 | addPageError(ex);
|
1335 | break;
|
1336 | }
|
1337 | } else {
|
1338 | obj = kidObj;
|
1339 | }
|
1340 |
|
1341 | if (!(obj instanceof _primitives.Dict)) {
|
1342 | addPageError(new _util.FormatError("Page dictionary kid reference points to wrong type of object."));
|
1343 | break;
|
1344 | }
|
1345 |
|
1346 | let type = obj.getRaw("Type");
|
1347 |
|
1348 | if (type instanceof _primitives.Ref) {
|
1349 | try {
|
1350 | type = await xref.fetchAsync(type);
|
1351 | } catch (ex) {
|
1352 | addPageError(ex);
|
1353 | break;
|
1354 | }
|
1355 | }
|
1356 |
|
1357 | if ((0, _primitives.isName)(type, "Page") || !obj.has("Kids")) {
|
1358 | addPageDict(obj, kidObj instanceof _primitives.Ref ? kidObj : null);
|
1359 | } else {
|
1360 | queue.push({
|
1361 | currentNode: obj,
|
1362 | posInKids: 0
|
1363 | });
|
1364 | }
|
1365 |
|
1366 | queueItem.posInKids++;
|
1367 | }
|
1368 |
|
1369 | return map;
|
1370 | }
|
1371 |
|
1372 | getPageIndex(pageRef) {
|
1373 | const cachedPageIndex = this.pageIndexCache.get(pageRef);
|
1374 |
|
1375 | if (cachedPageIndex !== undefined) {
|
1376 | return Promise.resolve(cachedPageIndex);
|
1377 | }
|
1378 |
|
1379 | const xref = this.xref;
|
1380 |
|
1381 | function pagesBeforeRef(kidRef) {
|
1382 | let total = 0,
|
1383 | parentRef;
|
1384 | return xref.fetchAsync(kidRef).then(function (node) {
|
1385 | if ((0, _primitives.isRefsEqual)(kidRef, pageRef) && !(0, _primitives.isDict)(node, "Page") && !(node instanceof _primitives.Dict && !node.has("Type") && node.has("Contents"))) {
|
1386 | throw new _util.FormatError("The reference does not point to a /Page dictionary.");
|
1387 | }
|
1388 |
|
1389 | if (!node) {
|
1390 | return null;
|
1391 | }
|
1392 |
|
1393 | if (!(node instanceof _primitives.Dict)) {
|
1394 | throw new _util.FormatError("Node must be a dictionary.");
|
1395 | }
|
1396 |
|
1397 | parentRef = node.getRaw("Parent");
|
1398 | return node.getAsync("Parent");
|
1399 | }).then(function (parent) {
|
1400 | if (!parent) {
|
1401 | return null;
|
1402 | }
|
1403 |
|
1404 | if (!(parent instanceof _primitives.Dict)) {
|
1405 | throw new _util.FormatError("Parent must be a dictionary.");
|
1406 | }
|
1407 |
|
1408 | return parent.getAsync("Kids");
|
1409 | }).then(function (kids) {
|
1410 | if (!kids) {
|
1411 | return null;
|
1412 | }
|
1413 |
|
1414 | const kidPromises = [];
|
1415 | let found = false;
|
1416 |
|
1417 | for (let i = 0, ii = kids.length; i < ii; i++) {
|
1418 | const kid = kids[i];
|
1419 |
|
1420 | if (!(kid instanceof _primitives.Ref)) {
|
1421 | throw new _util.FormatError("Kid must be a reference.");
|
1422 | }
|
1423 |
|
1424 | if ((0, _primitives.isRefsEqual)(kid, kidRef)) {
|
1425 | found = true;
|
1426 | break;
|
1427 | }
|
1428 |
|
1429 | kidPromises.push(xref.fetchAsync(kid).then(function (obj) {
|
1430 | if (!(obj instanceof _primitives.Dict)) {
|
1431 | throw new _util.FormatError("Kid node must be a dictionary.");
|
1432 | }
|
1433 |
|
1434 | if (obj.has("Count")) {
|
1435 | total += obj.get("Count");
|
1436 | } else {
|
1437 | total++;
|
1438 | }
|
1439 | }));
|
1440 | }
|
1441 |
|
1442 | if (!found) {
|
1443 | throw new _util.FormatError("Kid reference not found in parent's kids.");
|
1444 | }
|
1445 |
|
1446 | return Promise.all(kidPromises).then(function () {
|
1447 | return [total, parentRef];
|
1448 | });
|
1449 | });
|
1450 | }
|
1451 |
|
1452 | let total = 0;
|
1453 |
|
1454 | const next = ref => pagesBeforeRef(ref).then(args => {
|
1455 | if (!args) {
|
1456 | this.pageIndexCache.put(pageRef, total);
|
1457 | return total;
|
1458 | }
|
1459 |
|
1460 | const [count, parentRef] = args;
|
1461 | total += count;
|
1462 | return next(parentRef);
|
1463 | });
|
1464 |
|
1465 | return next(pageRef);
|
1466 | }
|
1467 |
|
1468 | get baseUrl() {
|
1469 | const uri = this._catDict.get("URI");
|
1470 |
|
1471 | if (uri instanceof _primitives.Dict) {
|
1472 | const base = uri.get("Base");
|
1473 |
|
1474 | if (typeof base === "string") {
|
1475 | const absoluteUrl = (0, _util.createValidAbsoluteUrl)(base, null, {
|
1476 | tryConvertEncoding: true
|
1477 | });
|
1478 |
|
1479 | if (absoluteUrl) {
|
1480 | return (0, _util.shadow)(this, "baseUrl", absoluteUrl.href);
|
1481 | }
|
1482 | }
|
1483 | }
|
1484 |
|
1485 | return (0, _util.shadow)(this, "baseUrl", null);
|
1486 | }
|
1487 |
|
1488 | static parseDestDictionary(params) {
|
1489 | const destDict = params.destDict;
|
1490 |
|
1491 | if (!(destDict instanceof _primitives.Dict)) {
|
1492 | (0, _util.warn)("parseDestDictionary: `destDict` must be a dictionary.");
|
1493 | return;
|
1494 | }
|
1495 |
|
1496 | const resultObj = params.resultObj;
|
1497 |
|
1498 | if (typeof resultObj !== "object") {
|
1499 | (0, _util.warn)("parseDestDictionary: `resultObj` must be an object.");
|
1500 | return;
|
1501 | }
|
1502 |
|
1503 | const docBaseUrl = params.docBaseUrl || null;
|
1504 | let action = destDict.get("A"),
|
1505 | url,
|
1506 | dest;
|
1507 |
|
1508 | if (!(action instanceof _primitives.Dict)) {
|
1509 | if (destDict.has("Dest")) {
|
1510 | action = destDict.get("Dest");
|
1511 | } else {
|
1512 | action = destDict.get("AA");
|
1513 |
|
1514 | if (action instanceof _primitives.Dict) {
|
1515 | if (action.has("D")) {
|
1516 | action = action.get("D");
|
1517 | } else if (action.has("U")) {
|
1518 | action = action.get("U");
|
1519 | }
|
1520 | }
|
1521 | }
|
1522 | }
|
1523 |
|
1524 | if (action instanceof _primitives.Dict) {
|
1525 | const actionType = action.get("S");
|
1526 |
|
1527 | if (!(actionType instanceof _primitives.Name)) {
|
1528 | (0, _util.warn)("parseDestDictionary: Invalid type in Action dictionary.");
|
1529 | return;
|
1530 | }
|
1531 |
|
1532 | const actionName = actionType.name;
|
1533 |
|
1534 | switch (actionName) {
|
1535 | case "ResetForm":
|
1536 | const flags = action.get("Flags");
|
1537 | const include = ((typeof flags === "number" ? flags : 0) & 1) === 0;
|
1538 | const fields = [];
|
1539 | const refs = [];
|
1540 |
|
1541 | for (const obj of action.get("Fields") || []) {
|
1542 | if (obj instanceof _primitives.Ref) {
|
1543 | refs.push(obj.toString());
|
1544 | } else if (typeof obj === "string") {
|
1545 | fields.push((0, _util.stringToPDFString)(obj));
|
1546 | }
|
1547 | }
|
1548 |
|
1549 | resultObj.resetForm = {
|
1550 | fields,
|
1551 | refs,
|
1552 | include
|
1553 | };
|
1554 | break;
|
1555 |
|
1556 | case "URI":
|
1557 | url = action.get("URI");
|
1558 |
|
1559 | if (url instanceof _primitives.Name) {
|
1560 | url = "/" + url.name;
|
1561 | }
|
1562 |
|
1563 | break;
|
1564 |
|
1565 | case "GoTo":
|
1566 | dest = action.get("D");
|
1567 | break;
|
1568 |
|
1569 | case "Launch":
|
1570 | case "GoToR":
|
1571 | const urlDict = action.get("F");
|
1572 |
|
1573 | if (urlDict instanceof _primitives.Dict) {
|
1574 | url = urlDict.get("F") || null;
|
1575 | } else if (typeof urlDict === "string") {
|
1576 | url = urlDict;
|
1577 | }
|
1578 |
|
1579 | let remoteDest = action.get("D");
|
1580 |
|
1581 | if (remoteDest) {
|
1582 | if (remoteDest instanceof _primitives.Name) {
|
1583 | remoteDest = remoteDest.name;
|
1584 | }
|
1585 |
|
1586 | if (typeof url === "string") {
|
1587 | const baseUrl = url.split("#")[0];
|
1588 |
|
1589 | if (typeof remoteDest === "string") {
|
1590 | url = baseUrl + "#" + remoteDest;
|
1591 | } else if (Array.isArray(remoteDest)) {
|
1592 | url = baseUrl + "#" + JSON.stringify(remoteDest);
|
1593 | }
|
1594 | }
|
1595 | }
|
1596 |
|
1597 | const newWindow = action.get("NewWindow");
|
1598 |
|
1599 | if (typeof newWindow === "boolean") {
|
1600 | resultObj.newWindow = newWindow;
|
1601 | }
|
1602 |
|
1603 | break;
|
1604 |
|
1605 | case "Named":
|
1606 | const namedAction = action.get("N");
|
1607 |
|
1608 | if (namedAction instanceof _primitives.Name) {
|
1609 | resultObj.action = namedAction.name;
|
1610 | }
|
1611 |
|
1612 | break;
|
1613 |
|
1614 | case "JavaScript":
|
1615 | const jsAction = action.get("JS");
|
1616 | let js;
|
1617 |
|
1618 | if (jsAction instanceof _base_stream.BaseStream) {
|
1619 | js = jsAction.getString();
|
1620 | } else if (typeof jsAction === "string") {
|
1621 | js = jsAction;
|
1622 | }
|
1623 |
|
1624 | const jsURL = js && (0, _core_utils.recoverJsURL)((0, _util.stringToPDFString)(js));
|
1625 |
|
1626 | if (jsURL) {
|
1627 | url = jsURL.url;
|
1628 | resultObj.newWindow = jsURL.newWindow;
|
1629 | break;
|
1630 | }
|
1631 |
|
1632 | default:
|
1633 | if (actionName === "JavaScript" || actionName === "SubmitForm") {
|
1634 | break;
|
1635 | }
|
1636 |
|
1637 | (0, _util.warn)(`parseDestDictionary - unsupported action: "${actionName}".`);
|
1638 | break;
|
1639 | }
|
1640 | } else if (destDict.has("Dest")) {
|
1641 | dest = destDict.get("Dest");
|
1642 | }
|
1643 |
|
1644 | if (typeof url === "string") {
|
1645 | const absoluteUrl = (0, _util.createValidAbsoluteUrl)(url, docBaseUrl, {
|
1646 | addDefaultProtocol: true,
|
1647 | tryConvertEncoding: true
|
1648 | });
|
1649 |
|
1650 | if (absoluteUrl) {
|
1651 | resultObj.url = absoluteUrl.href;
|
1652 | }
|
1653 |
|
1654 | resultObj.unsafeUrl = url;
|
1655 | }
|
1656 |
|
1657 | if (dest) {
|
1658 | if (dest instanceof _primitives.Name) {
|
1659 | dest = dest.name;
|
1660 | }
|
1661 |
|
1662 | if (typeof dest === "string") {
|
1663 | resultObj.dest = (0, _util.stringToPDFString)(dest);
|
1664 | } else if (Array.isArray(dest)) {
|
1665 | resultObj.dest = dest;
|
1666 | }
|
1667 | }
|
1668 | }
|
1669 |
|
1670 | }
|
1671 |
|
1672 | exports.Catalog = Catalog; |
\ | No newline at end of file |